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- Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
- For water years 2014 onward, choose a water year and parameter and an on-demand Water-Year Summary report will be generated.
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USGS Water-Year Summary 2024
02147500 ROCKY CREEK AT GREAT FALLS, SC
LOCATION - Lat 34°33'55", long 80°55'12" referenced to North American Datum of 1927, Chester County, SC, Hydrologic Unit 03050103, on left bank, 350 ft downstream from Turkey Branch, 1.0 mi west of Great Falls, and at mile 1.8.
DRAINAGE AREA - 194 mi².
REVISIONS HISTORY - Gage datum was revised on January 31, 2022, based on an error in the determination of the original gage datum.
SURFACE-WATER RECORDS
PERIOD OF RECORD - March 1951 to September 1981, October 1986 to current year.
GAGE - Data collection platform. Elevation of gage is 294.13 ft above NAVD of 1988. Prior to October 1, 2006 at same site, at datum 2.0 ft lower.
REMARKS - Gage-height records are generally good to fair. Discharge records are generally good to fair except for estimated discharges, which are poor. Additional details on the accuracy of the records can be obtained by contacting the USGS South Atlantic Water Science Center at gs-w-sc_nwisweb_data_inquiries@usgs.gov.
EXTREMES FOR PERIOD OF RECORD - Maximum instantaneous discharge, 31,300 CFS, August 23, 1967. Maximum instantaneous gage height, 18.82 ft, August 23,1967. Minimum daily mean discharge, 0 CFS, August 15, 2002, and September 18, 2009 (estimated).
